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  City A City B City C City D City E City F City G
City A   x x x x x x
City B     x x x x x
City C       x x x x
CIty D         x x x
City E           x x
City F             x
City G              
Each "x" in the pricing table above represents an entry indicating the cost for flying roundtrip between a pair of seven cities. If the table were extended to represent the prices for flying between all pairs of 32 cities in an airline's schedule and each price were to be represented by only one entry, how many entries would the table then have?
  • A400
  • B484
  • C496
  • D900
  • E992
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正确答案: C

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